knotty(adjective satellite) making great mental demands; hard to comprehend or solve; "a baffling problem"; "I faced the knotty problem of what to have for breakfast"; "a problematic situation at home"
(adjective satellite) highly involved or intricate; "the Byzantine tax structure"; "convoluted legal language"; "convoluted reasoning"; "intricate needlework"; "an intricate labyrinth of refined phraseology"; "the plot was too involved"; "a knotty problem"; "got his way by lab
(adjective satellite) used of old persons or old trees; covered with knobs or knots; "gnarled and knotted hands"; "a knobbed stick"
Source:
WordNet 2.0 Copyright 2003 by Princeton University. All rights reserved.
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